In a first case of its kind, the parents of a US school shooter have been sentenced over their child's attack. \xa0
Ethan Crumbley killed four students when he opened fire at a Michigan high school in 2021 and was sentenced to life without parole. \xa0
His parents James and Jennifer Crumbley were found guilty of involuntary manslaughter for their failure to secure the gun used in the shooting and have been sentenced to 10 to 15 years in prison respectively.\xa0
US Correspondent Richard Arnold told Mike Hosking that the case was intensely emotional.\xa0
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